Bundesliga referees chief Andreas Rettig believes something needs to be done and is an advocate for the introduction of new technology to help officials.

"We are always open to new technological innovations," he said in an interview with German newspaper Sued Deutsche. "But it is also clear that we need to address the fundamental decisions more carefully."

Google Glass is a wearable computer with a so-called optical head-mounted display, and shows information on the lens in front of the viewer's eyes.

And Rettig thinks the futuristic technology - or a variant of it - would be ideal for helping officials with their decision making.

"[We should think about] computer glasses for referees, such as Google Glass.

"When we think about technical progress, then we must take the next step to discuss whether the referee could wear glasses to see what everyone sees viewers on the couch."